3. Lightening Masks. To get rid of dark underarms, make a homemade whitening pack or buy one at the market. If you want to prepare the mask at home, mix a handful of gram flour with yogurt, lemon and a little turmeric powder. Keep it for 15-20 minutes, and then wash it off.
The RBC Curriculum is divided into 42 individual topics, called Learning Domains. The Learning Domains contain the minimum required foundational information for given subjects, which are detailed in the Training and Testing Specification for Peace Officer Basic Courses. A separate workbook is available for each domain.
Since the work was produced by higher education, the words tend to be a little bigger than we normally use. Domains may be thought of as categories. Instructional designers, trainers, and educators often refer to these three categories as KSA (Knowledge [cognitive], Skills [psychomotor], and Attitudes [affective]).